Inspector is a little Python script for the
Postfix mail server that helps with detection of
NDR (Non Delivery Report) spam messages. It adds
a watermark to every email message being sent out
of the defined "mydomains", and implements a
mechanism for checking for the presence and
validity of such watermarks in every NDR message.
It means that you can check if the NDR message is
valid or not (i.e. it is NDR spam).
